UI Development

The EventLens frontend is built with React and Vite.

Running in Dev Mode

To run the UI independently from the Fat JAR wrapper with Hot Module Replacement (HMR):

Start your backend API server (either via IntelliJ JVM Runner or ./gradlew run) so that localhost:9090 is actively accepting connections.
Ensure your server.allowed-origins config in eventlens.yaml contains your Vite dev URL (http://localhost:5173).

cd eventlens-ui
npm install
npm run dev

Point your browser to http://localhost:5173. Any changes to React components will instantly reflect without rebuilding JARs.